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[PATCH 3/4] list-objects: optimize "revs->blob_objects = 0" case

From
Jeff King <peff@peff.net>
Date
Jun 5, 2013, 22:40 UTC
Message-ID
<20130605224004.GC15607@sigill.intra.peff.net>
In-Reply-To
<20130605223551.GF8664@sigill.intra.peff.net>

If we are traversing trees during a "--objects" traversal, we may skip blobs if the "blob_objects" field of rev_info is not set. But we do so as the first thing in process_blob(), only after we have actually created the "struct blob" object, incurring a hash lookup. We can optimize out this no-op call completely.

This does not actually affect any current code, as all of the current traversals always set blob_objects when looking at objects, anyway.

Signed-off-by: Jeff King <peff@peff.net>
---
 list-objects.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/list-objects.c b/list-objects.c
index c8c3463..77e6ec5 100644
--- a/list-objects.c
+++ b/list-objects.c
@@ -116,7 +116,7 @@ static void process_tree(struct rev_info *revs,
 			process_gitlink(revs, entry.sha1,
 					show, &me, entry.path,
 					cb_data);
-		else
+		else if (revs->blob_objects)
 			process_blob(revs,
 				     lookup_blob(entry.sha1),
 				     show, &me, entry.path,
-- 
1.8.3.rc2.14.g7eee6b3
Previous: Jeff KingNext: Jeff King
Message 18 of 30 in “[BUG] git archive broken in 1.7.8.1”
  1. Albert Astals CidJan 10, 2012
  2. Carlos Martín NietoJan 10, 2012
  3. Albert Astals CidJan 10, 2012
  4. Carlos Martín NietoJan 10, 2012
  5. Jeff KingJan 10, 2012
  6. archive: re-allow HEAD:Documentation on a remote invocationCarlos Martín Nieto, Jan 11, 2012
  7. Jeff KingJan 11, 2012
  8. 1/2 get_sha1_with_context: report features used in resolutionJeff King, Jan 11, 2012
  9. Junio C HamanoJan 12, 2012
  10. Jeff KingJan 12, 2012
  11. 2/2 archive: loosen restrictions on remote object lookupJeff King, Jan 11, 2012
  12. Ian HarveyMay 29, 2013
  13. Jeff KingJun 5, 2013
  14. 0/4 real reachability checks for upload-archiveJeff King, Jun 5, 2013
  15. 1/4 clear parsed flag when we free tree buffersJeff King, Jun 5, 2013
  16. Junio C HamanoJun 6, 2013
  17. 2/4 upload-archive: restrict remote objects with reachability checkJeff King, Jun 5, 2013
  18. 3/4 list-objects: optimize "revs->blob_objects = 0" caseJeff King, Jun 5, 2013
  19. 4/4 archive: ignore blob objects when checking reachabilityJeff King, Jun 5, 2013
  20. Michael HaggertyJun 6, 2013
  21. Eric SunshineJun 7, 2013
  22. Junio C HamanoJun 6, 2013
  23. Junio C HamanoJan 12, 2012
  24. Jeff KingJan 12, 2012
  25. Jeff KingJan 12, 2012
  26. Junio C HamanoJan 12, 2012
  27. Jeff KingJan 12, 2012
  28. Junio C HamanoJan 12, 2012
  29. Allan WindJan 10, 2012
  30. Carlos Martín NietoJan 11, 2012

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